Influence of Different CAD/CAM Crown Materials on the Fracture of Custom-Made Titanium and Zirconia Implant Abutments After Artificial Aging

Elsayed, Adham; Farrag, Gasser; Chaar, Mohamed Sad; Abdelnabi, Nouran; Kern, Matthias

doi:10.11607/ijp.6137

Cited by 19 publications

(44 citation statements)

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“…Different compositions of the tested materials can be responsible for this difference in fracture strength. Another interesting point in this study is that monolithic PEEK crowns have been employed in the present study to eliminate the risk of fracture or crack of the veneering material 34) . In need of long-term use, PEEK crowns may be used with composite veneering due to esthetic reasons.…”

Section: Discussionmentioning

confidence: 99%

Can polylactic acid be a CAD/CAM material for provisional crown restorations in terms of fit and fracture strength?

et al. 2021

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This study aimed to evaluate polylactic acid (PLA) as a provisional crown material. Lower right first molar phantom tooth was used for the fabrication of 60 crowns. Samples were divided into three groups (n=20) according to the material: Group PL (PLA), Group PM (polymethyl methacrylate), and Group PE (polyetheretherketone). Each group was investigated for internal and marginal fit, fracture strength, and fracture mode. Data were analyzed using ANOVA, chi-squared test, and Tukey's tests (p≤0.05). The average marginal gap value of each group was: PE 56.00±4.67 µm, PM 61.15±4.44 µm, and PL 60.40±2.85 µm (p<0.001). The average internal gap value for each group was: PE 128.90±8.39 µm, PM 132.40±7.51 µm, and PL 130.75±9.76 µm (p=0.442). The average fracture strength of each group was: PE 840.90±13.23 N, PM 733.30±9.00 N, and PL 664.50±10.79 N (p<0.001). Results demonstrated that PLA may be a good option as a provisional crown material.

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Section: Discussionmentioning

confidence: 99%

Can polylactic acid be a CAD/CAM material for provisional crown restorations in terms of fit and fracture strength?

et al. 2021

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“…Thus, PEEK prostheses have been considered capable to withstand occlusal forces in the molar region while the failure mode observed was adhesive between veneering composite and framework [31]. El Sayed et al found high fracture resistance of PEEK crowns, comparable to zirconia and lithium disilicate crowns supported by titanium and zirconia implant abutments [32]. Adequate fracture resistance values of 1518 ± 134 N have also been found by Jin et al in an in vitro study [33].…”

Section: Implant-supported Fixed Dental Prostheses (Ifdps)mentioning

confidence: 95%

The use of PEEK in digital prosthodontics: A narrative review

et al. 2020

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Background: Advanced computer-aided design and computer-aided manufacturing (CAD-CAM) technology led to the introduction of an increasing number of machinable materials suitable for dental prostheses. One of these materials is polyetheretherketone (PEEK), a high performance polymer recently used in dentistry with favorable physical, mechanical and chemical properties. The purpose of this study was to review the current published literature on the use of PEEK for the fabrication of dental prostheses with CAD-CAM techniques. Methods: Electronic database searches were performed using the terms "PEEK", "CAD-CAM", "dental", "dentistry" to identify studies related to the use of PEEK for the fabrication of CAD-CAM prostheses. The search period spanned from January 1990 through February 2020. Both in vivo and in vitro studies in English were eligible. Review articles and the references of the included publications were searched to identify relevant articles. Results: A great number of in vitro studies are available in the current literature pointing out the noticeable properties of PEEK. The use of PEEK has been recommended for a wide range of CAD-CAM fabricated fixed and removable dental prostheses. PEEK was additionally recommended for occlusal splints, intra-radicular posts, implant abutments, customized healing abutments and provisional restorations. However, only a few clinical studies were identified. Conclusions: PEEK could be considered as a viable alternative for CAD-CAM fixed and removable dental prostheses to well-established dental materials. Due to the scarcity of clinical data, clinical trials are needed to assess the longterm performance of PEEK prostheses.

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“…Moreover, two‐body wear test of PEEK was more favorable compared to the other CAD/CAM composite resin and PMMA material . in vitro testing of PEEK molar crowns fabricated on zirconia and titanium abutments in a chewing simulator resulted in acceptable fracture strength property, recommending them for clinical application …”

Section: Subtractive Manufacturingmentioning

confidence: 99%

Materials in digital dentistry—A review

Sulaiman¹

2020

J Esthet Restor Dent

161

112

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Objective To review materials available in computer‐aided design/computer‐aided manufacturing (CAD/CAM), their various properties and accuracy are compared to conventional materials/methods when available. Overview CAD/CAM in dentistry is constantly growing and becoming a user‐ and patient‐friendly technology and service using intraoral scanners and laboratory/chairside milling units to manufacture dental restorations and appliances from multiple materials including wax, metals, composite resins, and ceramics. Properties of these materials may vary when compared to restorations prepared from conventional and additive manufacturing methods. Understanding the differences in these properties is important for material and fabrication method selection. Additive manufacturing is becoming an alternative to subtractive manufacturing in many applications. However, chemical composition, mechanical and physical properties of these materials are still lacking. 3D printed materials require a considerable amount of research and time to prove their clinical efficacy. Conclusion The current developments in, and possibilities of, CAD/CAM technology is exciting and is transforming restorative dentistry. With all this excitement, it is crucially important to ensure that proper testing and evaluation of the various materials are warranted before making definite claims and decisions to replace conventionally prepared materials. Clinical Significance CAD/CAM materials are versatile and emerging as the material of choice for many restorations and appliances. For recently introduced CAD/CAM materials, it is important to ensure that proper clinical‐ and research‐based evidence confirming the success and durability of these materials are available before recommending them in patient care.

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Influence of Different CAD/CAM Crown Materials on the Fracture of Custom-Made Titanium and Zirconia Implant Abutments After Artificial Aging

Cited by 19 publications

References 0 publications

Can polylactic acid be a CAD/CAM material for provisional crown restorations in terms of fit and fracture strength?

Can polylactic acid be a CAD/CAM material for provisional crown restorations in terms of fit and fracture strength?

The use of PEEK in digital prosthodontics: A narrative review

Materials in digital dentistry—A review

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